Telephone-holder.



No. 803,980. PATENTED NOV. '7, 1905.

G. H. BURDEN. TELEPHONE HOLDER.

APPLICATION FILED MAR.1. 1905.

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No. 803,980. PATENTED NOV. 7, 1905.

G. H. BURDEN.

TELEPHONE HOLDER. APPLIOATION FILED MARJ, 1905.

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C. H. BURDEN. TELEPHONE HOLDER.

APPLIOATION FILED MAR.1,1905.

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TELEPHONE HOLDER.

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CHARLES H. BORDEN, OF STAMFORD, CONNECTICUT.

TELEPHONE-HOLDER.

Specification of Letters Patent.

Patented Nov. '7, 1905.

Application filed March I 1905. Serial No. 247.835.

To all whmit it may concern:

Be it known that LCHARLEs H. BORDEN, a citizen of the United States,residing at Stamford, in the county of Fairfield and State ofConnecticut, have invented a certain new and useful Improvement inTelephone-Holders, of which the following is a specification.

The improvement relates to that class of holders for telephones or otherarticles which embody a parallel-ruler-motion device andcounterbalancing-spring which can be raised and lowered and movedhorizontally in various directions.

My improved holder, like many others, is adapted to be attached to anysufiiciently strong stationary support, as the wall of an apartment or adesk.

An important feature of my invention is the combination, with theparallel-ruler motion and counterbalancing-springs, of a cam means tocompensate for the varying tension of the spring in the varyingpositions of the holder. The tendency to raise by the action of thespring at different points in the traverse may be compensated for to avarying extent by changing the outline of the cam.

The following is a description of what I consider the best means ofcarrying out the invention.

The accompanying drawings form a part of this specification.

Fi ure 1,'Sheet 1, is an elevation, on a smalT scale, showing the entireholder in use on a desk. The full lines show the telephone instrument ina low position to accommodate one sitting at the desk, while the dottedlines show it in position to accommodate one standing by. Fig. 2, Sheet1, is a side elevation on a larger scale. The bars extend horizontallyto the right. Fig. 3, Sheet 2, is

. a corresponding view including a further portion, showing the kind oftelephone instru ment for which this form is especially adapted. Fig. 4,Sheet 2, is a side view of a portion on a larger scale corresponding toFig. 1 slightly modified. By aid of dotted lines it shows the holder inthree positions. Fig. 5, Sheet 1, is a side view of modified form ofcam-arm on the spring. Fig. 6, Sheet 1, is a rear elevation of a portionpartly in section. Fig. 7, Sheet 3, is a corresponding view showing thespring-arms changed in position to reduce the tension of the spring.Fig. 8, Sheet 3, is a plan view of a portion. Fig. 9, Sheet 3, is ahorizontal section on the line 25 25 in Fig. 23. Fig. 10, Sheet 2, is aside view showing a further slight modification in three positions. Fig.11, Sheet 2, is a section through a roller corresponding to Fig. 15 withthe retaining means modified. Fig. 12, Sheet 2, is a correspondingsection showing another modification of the roller. Fig. 13, Sheet 2, isa section on a large scale longitudinal through the roller whichreceives the action of the spring-cam. Fig. 14, Sheet 1, is across-section of a portion on the line 14 14 in Fig. 1. Fig. 15, Sheet1, is a vertical section on the line 15 15 in Fig. 14. The remainingfigures showmodifications. Fig. 16, Sheet 4, is a front view showing theentire apparatus. Fig. 17, Sheet 4, is a plan view of a portion. Fig.18, Sheet 4, is a horizontal section on the line 18 18 in Fig. 17. Fig.19, Sheet 4, is an elevation of a portion on a larger scale as seen fromthe right in Fig. 16. Fig. 20, Sheet 4, is an elevation of a smallportion on a larger scale. It is shown with the bar extending to theright. Fig. 21, Sheet 4, is a plan view of a portion. Fig. 22, Sheet 3,is a corresponding view slightly modified. Fig. 23, Sheet 3, is anelevation corresponding to the dotted view in the right side of Fig. 16with the parallel bar adjusted lower and the cam and spring. modi-Similar letters of reference indicate like parts in all the figureswhere they appear.

Referring to the drawings, A is an upright pin firmly secured to a desk.A base casting B is pivotally mounted thereon. It has two cylindricalprojections B B in line one on each side. Around each of these asufficiently strong spring is coiled, each having, two arms. The coil ineach is marked G and G and G are the arms, respectively.

B is an upper horizontal pivot-bolt, and B a similar lower pivot-boltset in B. They secure two parallel bars D and D each adapted to turn inthe same vertical plane, and the outer ends of these are pivoted to amovable outer piece by corresponding horizontal bolts E E itsattachments are supported in the outer piece E, as shown in Fig. 1, withany ordi nary or suitable provisions for manipulating and with its loadmay be raised and lowered at will, always holding itself horizontal. Thearrangement of the pivot-bolts B and B and E and E permits the outerpiece to be raised to a vertical position nearly over the pivot A, whichallows the instrument to be The transmitter M and supported higher thanwould be otherwise possible and to be held with absolutely nodisposition to sink even if the provisions for balancing and securingare for any reason inefficient.

The mainsprings G are adjustable as follows: The arm G of each isadapted to engage with notches c in the side, respectively, of acarriage C, mounted on an upright post B on the base B, with liberty tobe raised and lowered. The other arm G is bent or filed, or both, toallow its outer side to serve as a carefully-formed cam. The bar Dcarries a transverse pin D on which loosely turn rollers or wheels D,each of which is lubricated at its internal bearing on the pin D but isalways dry and clean at its periphery. Each wheel is pressed upward bythe corresponding spring-cam as the telephone instrument is raised orlowered. The outer edge of each cam bears against its proper wheel D andtravels along its lower side. The lifting and sustaining force of thespring at different points in its sweep may be varied by simply changingthe form of the cam at the different parts.

The tension of either spring maybe changed at will. To make a change,the arm G is pulled out of the notch c, in which it is now resting, andis transferred to and engaged in the adjacent notch above or below. Ifit is the notchbelow its present notch, the tension will be increased.It is not essential that the force of the springs be equal. For amoderate increase in the force with which the parallel bars and theirloadthe outer piece and appended partsare lifted by the spring actionone spring G is thus increased in tension by adjusting its arm G into anotch lower than it formerly occupied. If a greater change is required,both springs may be thus increased in tension.

It will be desirable in most cases to adjust more finely. In such casesthe thumb-screw II, which is tapped in the upright portion B of thebase-casting B, may be operated. (See Fig. 7.) Turning this screw oneway depresses the carriage Cwith all the notches c, with the effect toincrease the tension of the springs on each side of the device. Thisscrew II may be adjusted with any required degree of nicety toaccommodate the needs or the fancy of the user.

When using the form of telephonic receiver and transmitter shown inFigs. 1 and '3, I prefer to bend up the hook O for the receiver N, sothat it will not touch a flat table or desk when the bracket is turneddown, the buffer E striking the desk first.

When the desk form of telephone set is used, as shown in Fig. 16, theouter piece E of the parallel-ruler motion is made L-shaped to provide asupporting-arm e for the telephone projecting horizontally near thelevel of the lower pivot E, Figs. 16 and 23, so that when the bracket islowered to the position shown by full lines in Fig. 16 the telephone isbut a very slight distance above the position it would occupy if itstood on the desk.

The conductor-wires to the telephone instruments are in the usualflexible cord F, Fig. 1, which is held in clips F. (Shown more clearlyin Figs. 14 and 15.) These clips are secured to one of the bars,preferably D by being sprung into notches d in the bars, the clips beingmade of spring metal for the purpose.

Various modifications may be made in the construction of the apparatus.Thus the compensating cam may be modified consid erably. Thus in Fig. 4I have shown the cam-arm G of the coiled spring as an open ring. In Fig.5 I have shown it with a notch g to receive the antifriction-roller D onthe bar D in the horizontal position of the parallel bars.

In the modification Figs. 16 to 21 I have shown the inner arms G of thetwo coiled springs G, which are mounted on opposite sides of the bars DD, as approximately straight and provided with antifriction-rollers g torun on cams G secured to the upper bar D. In Figs. 19 and 21 the arms Gof the springs G are adapted to be engaged with notches in a plate C,formed in one with the swiveled supporting-base B.

In Figs. 8, 9, 10, and 23 I have shown the counterbalancing-spring inthe form of a clock-spring G, which may be coiled around one of thepivot-bolts B as shown in Figs. 9 and 23. The tension of this spring maybe adjusted by a pawl and ratchet g 9 as will be readily understood. Inconnection with such a spring various forms of compensating cams may beused. Thus in Fig. 23 I have shown a cam G secured to the outer piece Eand acted on by an antifriction-roller d, carried by a spring-arm d,mounted on the bar D. In Fig. 10 I have shown the casing g to which theouter end of the clock-spring is secured, as carrying a cam-arm g actingon a pin d on the lower bar D In Figs. 11, 12, and 13 I have shown threeconstructions for holding the antifrictionrollers D on theirsupportingpin. In each case a pin D passes through the bar D and therollers are mounted on the opposite ends of the pin. In Fig. 13 therollers are retained in place by a cap-piece D held to the bar D by ascrew D and embracing annular flanges on the inner ends of the rollers.In the modification Fig. 11 the rollers are held in place by screws (1in the rollers entering at their inner ends annular grooves d in thepin. In Fig. 12 the pin passes entirely through both rollers and has itsouter ends upset to form shoulders to retain the rollers in place afterthey have been put on the pins.

I am aware that a compensating spring or its equivalent, in combinationwith an adjustable holder or bracket, is not broadly new, for such adevice is shown in the patent of W. S. How, No. 816,459, dated April 28,1885, and I therefore do not claim, broadly, such subject-matter herein.

I claim as my invention 1.. An adjustable holder for telephones, &c.,comprising two bars and end pieces forming a parallel-ruler motion witha counterbalancingspring means in combination with a cam to compensatefor the varying tension of the spring in the varying positions of theholder.

2. In a holder for telephones, &c., the combination of asupporting-base, two bars pivoted thereto, an outer piece on which thetelephone may be mounted and to which said bars are pivoted, to form aparallel-ruler motion, spring means to counterbalance the Weight of theparts and a cam to compensate for the varying tension of the spring inthe varying positions of the holder.

3. In a holder for telephones, &c., the combination of a support andbase swiveled thereto, two bars pivoted thereto, an outer piece on whichthe telephone may be mounted and to which said bars are pivoted, to forma parallel-ruler motion, spring means to counterbalance the weight ofthe parts and a cam to compensate for the varying tension of the springin the varying positions of the holder.

4. In a holder for telephones, &c., the combination of a swiveled base,two bars pivoted thereto, an outer piece onwhich the telephone may bemounted and to which said bars are pivoted, to form a parallel-rulermotion, spring means to counterbalance the weight of the parts, a cam tocompensate for the varying tension of the spring in the varyingpositions of the holder, and a device to make a rolling contact with thecam.

5. In a holder for telephones, &c., the combination of asupporting-base, two bars pivoted thereto, an outer piece on which thetelephone may be mounted and to which said bars are pivoted, to form aparallel-ruler motion, a spring to counterbalance the weight of theparts, a cam to compensate for the varying tension of the spring in thevarying positions of the holder, and means to ad just the tension of thespring.

6. In a holder for telephones, &c., the combination of asupporting-base, two bars pivoted thereto, an outer piece on which thetelephone may be mounted and to which said bars, are pivoted, to form aparallel-ruler motion, a spring to counterbalance the weight of theparts, a cam to compensate for the varying tension of the spring in thevarying positions of the holder, and a device having notches, to any ofwhich the spring may be connected to adjust its tension.

7. In a holder for telephones, &c., the combination of asupporting-base, two bars pivoted thereto, an outer piece on which thetelephone may be -mounted, and to which said bars are pivoted, to form aparallel-ruler motion, two coiled springs on opposite sides of the barsto counterbalance the weight of the parts, and a device with two sets ofnotches to which the respective springs may be connected to adjust theirtensions.

8. In a holder for telephones, &.c., the combination of asupportingbase, two bars pivoted thereto, an outer piece on which thetelephone may be mounted and to which said bars are pivoted, to form aparallel-ruler motion, a coiled counterbalancing spring connected at oneend to one of said parts and formed with a cam at the other end and anantifriction-roller on a relatively movable part to run on said cam.

Signed at New York city, in the county of New York and State of NewYork, this 18th day of February, A. D. 1905.

CHAS. H. BORDEN.

Witnesses LOUIS F. BRAUN, B. G. BRADY.

